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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: J Raman Spectrosc. 2017 Apr 11;48(6):803–812. doi: 10.1002/jrs.5118

Figure 3.

Figure 3

Characterization of the training set. a) Result of applying vertex component analysis (VCA) on three representative images in the training set. b) Result of applying the coarse K-means clustering analysis (KMCA) on the previous images and c) corresponding histogram quantification. d) Final result after applying the fine KMCA on the images and e) corresponding histogram quantification. Image size is 235.5 × 235.5 μm.